Question

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PHP, preg_replace, replace tag with tag attr

I read many references but this is very hard to understand.

Please help to improve my code.

I want to replace

<script src="core.js"></script> to <temp src="core.js"></temp>

While I am testing it, below will actual output what I want. However, on $replace, I only put <temp, how come it could replace the end tag???

$string = '<script src="core.js"></script>';
$pattern = '/^<script|<\/script>$/i';
  //    ^(start from script)    | (or)    $(end with script)
$replace = '<temp';
echo preg_replace($pattern, $replace, $string);

Out Put

<temp src="core.js"></temp>

Thank you very much for your help and advice.

Answer 1

Sorry if this doesn’t answer your question because you asked about regex, but if you can use str_replace, its generally better to do so, and much quicker.

$result = str_replace('<script', '<temp', $string);
$result = str_replace('script>', 'temp>', $result);

The problem with this though is, it wont match strings like:

<script src="core.js"></script >

The reason i didn’t just do:

str_replace("script", "temp", $string);

is because you could have other mensions of the word “script” in your variable, for example if a js file was called example.script.js